Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

48.0°F

Measurement Time: Thursday, February 26, 2026, 3:30 PM PST

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Colfax Spring, CA; Mather, CA; Harden Flat, CA

Tuolumne River

Station Name: TUOLUMNE R BL EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,369 feet

Nearest Address:
Cherry Lake Rd
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.8815908, -119.9701824

Nearby Water Temperatures

Tuolumne River, Groveland, CA (1.3 mi)
Cherry Creek, Groveland, CA (6.6 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Tuolumne River, Groveland, CA (17.1 mi)
Merced River, Yosemite Valley, CA (24.7 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (51.3 mi)
Deadman Creek, Mammoth Lakes, CA (57 mi)
Hot Creek, Mammoth Lakes, CA (62.8 mi)
Hot Creek, Mammoth Lakes, CA (63.4 mi)
San Joaquin River, Friant, CA (63.4 mi)
Hot Creek, Mammoth Lakes, CA (64.6 mi)
Trout Creek, South Lake Tahoe, CA (71.7 mi)
Upper Truckee River, South Lake Tahoe, CA (71.9 mi)
General Creek, Tahoma, CA (81.3 mi)
South Fork American River, Rescue, CA (82.9 mi)

Weather for Groveland, California

Current Weather

50.5°F
Clear
Clear
49.2°F
55.4°F
94%
ENE 4.5 mph
9 mph
54.8°F
40.3°F
0 in
0%
9 mi
1023 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 64°F
L: 50°F
Sunny
Fri
H: 68°F
L: 54°F
Partly Cloudy
Sat
H: 67°F
L: 58°F
Cloudy
Sun
H: 60°F
L: 48°F
Patchy rain nearby
Mon
H: 56°F
L: 47°F

Air Quality

AQI: 1 - Good
PM2.5: 3.45 μg/m3
PM10: 3.65 μg/m3
Carbon Monoxide: 125.85 μg/m3
Nitrogen Dioxide: 7.05 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 27 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:12 AM
Sunset: 5:51 PM
Daylight: 11 hrs 15 mins
Moonrise: 12:38 AM
Moon Transit: 8:33 PM
Moonset: 3:29 AM
Moon Phase: First Quarter
Moon Illumination: 72.9%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
8:03 PM - 10:33 PM

Minor Periods

12:08 AM - 1:38 PM
2:59 AM - 4:29 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued February 26 at 12:31PM PST until February 27 at 10:00AM PST by NWS Hanford CA

Effective: Thu February 26, 2026, 12:31 PM
Expires: Thu February 26, 2026, 9:00 PM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Bakersfield, Caruthers - San Joaquin - Selma, Delano-Wasco-Shafter, Fresno-Clovis, Hanford - Corcoran - Lemoore, Merced - Madera - Mendota, Planada - Le Grand - Snelling, Southeast San Joaquin Valley, and Visalia - Porterville - Reedley. * WHEN...From 2 AM to 10 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued February 26 at 6:05PM PST until February 27 at 10:00AM PST by NWS Hanford CA

Effective: Thu February 26, 2026, 6:05 PM
Expires: Fri February 27, 2026, 2:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Much of the San Joaquin Valley. * WHEN...From 2 AM to 10 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Thursday, February 26, 2026

Weather Forecast

Sunny
64°F
50°F
57.1°F
72%
0 in
0%
0%
7.2 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 5.56 μg/m3
PM10: 6.95 μg/m3
Carbon Monoxide: 146.33 μg/m3
Nitrogen Dioxide: 6.19 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 47.84 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:12 AM
Sunset: 5:51 PM
Daylight: 11 hrs 15 mins
Moonrise: 12:38 AM
Moon Transit: 8:33 PM
Moonset: 3:29 AM
Moon Phase: First Quarter
Moon Illumination: 72.9%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
8:03 PM - 10:33 PM

Minor Periods

12:08 AM - 1:38 PM
2:59 AM - 4:29 AM

Action Rating: 2 out of 5

Friday, February 27, 2026

Weather Forecast

Sunny
67.8°F
53.6°F
60.8°F
62%
0 in
0%
0%
4.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 6.13 μg/m3
PM10: 7.71 μg/m3
Carbon Monoxide: 151.53 μg/m3
Nitrogen Dioxide: 7.56 μg/m3
Sulphur Dioxide: 1.91 μg/m3
Ozone: 44.52 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:12 AM
Sunset: 5:52 PM
Daylight: 11 hrs 17 mins
Moonrise: 1:50 PM
Moon Transit: 9:32 PM
Moonset: 4:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

4:23 AM - 6:53 AM
9:02 PM - 11:32 PM

Minor Periods

1:20 PM - 2:50 PM
3:52 AM - 5:22 AM

Action Rating: 3 out of 5

Saturday, February 28, 2026

Weather Forecast

Partly Cloudy
66.6°F
57.7°F
62.6°F
67%
0 in
0%
0%
8.5 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 4.59 μg/m3
PM10: 6.39 μg/m3
Carbon Monoxide: 147.41 μg/m3
Nitrogen Dioxide: 6.66 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 51.4 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:12 AM
Sunset: 5:53 PM
Daylight: 11 hrs 20 mins
Moonrise: 3:04 PM
Moon Transit: 10:27 PM
Moonset: 5:04 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

5:21 AM - 7:51 AM
12:00 AM - 12:00 AM

Minor Periods

2:34 PM - 4:04 PM
4:34 AM - 6:04 AM

Action Rating: 3 out of 5

Sunday, March 1, 2026

Weather Forecast

Cloudy
59.5°F
48.1°F
56.8°F
74%
0 in
0%
0%
6.9 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 9.55 μg/m3
PM10: 12.26 μg/m3
Carbon Monoxide: 160.97 μg/m3
Nitrogen Dioxide: 6.18 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 67.6 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:12 AM
Sunset: 5:54 PM
Daylight: 11 hrs 22 mins
Moonrise: 4:16 PM
Moon Transit: 11:17 PM
Moonset: 5:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

6:14 AM - 8:44 AM
12:00 AM - 12:00 AM

Minor Periods

3:46 PM - 5:16 PM
5:09 AM - 6:39 AM

Action Rating: 4 out of 5

Monday, March 2, 2026

Weather Forecast

Patchy rain nearby
55.5°F
46.5°F
50.2°F
77%
0.01 in
89%
0%
8.3 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 8.01 μg/m3
PM10: 11.09 μg/m3
Carbon Monoxide: 169.21 μg/m3
Nitrogen Dioxide: 5.89 μg/m3
Sulphur Dioxide: 2.19 μg/m3
Ozone: 70.52 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:11 AM
Sunset: 5:55 PM
Daylight: 11 hrs 25 mins
Moonrise: 5:25 PM
Moon Transit: 12:00 AM
Moonset: 6:08 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:04 AM - 9:34 AM

Minor Periods

4:55 PM - 6:25 PM
5:38 AM - 7:08 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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